670224385 has 16 divisors (see below), whose sum is σ = 825585552. Its totient is φ = 522144000.

The previous prime is 670224377. The next prime is 670224391. The reversal of 670224385 is 583422076.

It can be written as a sum of positive squares in 8 ways, for example, as 19158129 + 651066256 = 4377^2 + 25516^2 .

It is not a de Polignac number, because 670224385 - 2³ = 670224377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19927 + ... + 41683.

It is an arithmetic number, because the mean of its divisors is an integer number (51599097).

Almost surely, 2^670224385 is an apocalyptic number.

It is an amenable number.

670224385 is a deficient number, since it is larger than the sum of its proper divisors (155361167).

670224385 is a wasteful number, since it uses less digits than its factorization.

670224385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21924.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 670224385 is about 25888.6922226674. The cubic root of 670224385 is about 875.1316852147.

The spelling of 670224385 in words is "six hundred seventy million, two hundred twenty-four thousand, three hundred eighty-five".